Café Trivia

Koko wa Greenwood

(Here is Greenwood)

question:

One of the pieces of information gathered by Nagisa's detectives were the boys blood-types. Why?

answer:

It's a popular belief in Japan that your date of birth, and blood type combined influence your personality type. There are various good-luck charms available for people therefore based on their birthday and blood-type, which gives little fortunes and tips about what type of person they should look for. Much like astrological horoscopes in North America.